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It is easy to see that OvR only needs to train N classifiers, while OvO needs to train N (N-1)/2 classifiers, so the storage overhead and test time overhead of OvO are usually larger than OvR. However, in training, each classifier of OVR uses all training samples, while each classifier of OVO only uses samples of two classes. Therefore, when there are many classes, the training time cost of OVO is usually smaller than that of OVR. As for the prediction performance, it depends on the specific data distribution, which is similar in most cases.The paper of the book in Grandma Lily's hand has already yellowed and seems to have been yellowed for some years.Public void update () {老太太把茶几拍得咚咚响，怒道：就算回来了，耽误了几年读书，这个怎么算？啊？人家杜老爷的儿子今年都下场考试去了，你说，你耽误他这些年，是不是该死？陈老爷尴尬极了。三个年轻人为了让他们的冒险频道增加更多的人气，去神秘的城市卡萨布兰卡旅行，却没有意识到它隐藏了一个可怕的秘密。樱庭美子（泷本美织 饰）从小在福利院长大，志向是成为一名合格的修女，并且为此不断的努力着，然而，不知是天赋不够还是运气太差，美子总不能如愿。某日，名为马渊的超人气乐队经纪人找到了美子，原来，美子的哥哥美男（泷本美织 饰）是这支乐队中的一员，今天将要举行签约仪式，然而，如此重要的日子，美男竟然将要缺席，为了保住自己的工作，马渊恳请美子女扮男装假扮美男，帮助自己度过难关。就这样，美子站在了事务所所长面前，在所长的要求下，美子演唱了一段赞歌，惊呆了在场的所有人。之后，美子又被马渊拜托继续假扮美男三个月，因为真正的美男因为惹是生非而住进了医院。